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Hydroponic Grow Media

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Hydroponic Grow Media

Hydroponic Grow Media

If you are not too familiar with hydroponics, you may be under the impression that it involves growing entirely in water. However, the reality is that sometimes you need to use grow media for a hydroponics system too. The reason is, it is needed to anchor the roots so that the plant can be supported in place. When you are growing outdoors traditionally in pots, garden soil is the most common choice. For hydroponic systems, you need a specific growing medium.  

What is a hydroponic grow medium? 

The term ‘hydroponic grow medium’ refers to an inert material that is used to anchor your hydroponic plants in their place. Since it is inert, it does not provide any minerals or nutrients to your plants. It is possible to make your own hydroponic grow medium, but there are several great options available in the market, including: 

Coco coir  

Clay pebbles and growstones 

Rockwool 

Hydroponic foam 

The best hydroponics growing medium  

The right growing medium for you depends on your specific requirements, and each of them has its pros and cons. Here are some brief details about each of them: 

Coco Coir 

Coco coir is derived from coconut husk and is 100% organic. It boasts of exceptional drainage abilities and water retention qualities. You can find it in various consistencies and utilize its superior germination capabilities to start your clones and seedlings.  

There’s another great thing about this hydroponic grow medium – it is entirely renewable. Since coconut husk does not have any other use, when you use it as a hydroponic grow medium, you are actually playing your part in environment conservation – which is a win-win situation! 

Clay pebbles and grow stones 

Clay pebbles and grow stones are 100% inert and also pH neutral. You can use them again and again for different grow cycles, and are sure to find them extremely sustainable. Manufactured from recycled glass that has been made smooth through sanding, these lightweight grow stones, and clay pebbles are a popular choice for a good reason.  

Check out our detailed guide on clay pebbles and grow stones to learn more! 

Rockwool 

Rockwool is created by melting rocks, which are then spun into fibers. This is a favorite choice for many growers because it offers excellent aeration and water retention. Its unique composition allows it to avoid getting degraded or broken down, which may be a problem when you want to get rid of it by disposing of it naturally.  

Rockwool is a preferred choice for many growers but if you opt for this option, make sure you remember to balance their pH using a pH adjuster. The rockwool cubes may have high pH.  

Hydroponic Foam and Oasis Cubes 

Oasis cubes, also called hydroponic foam, is another great choice for a hydroponic medium. Made from polyurethane, it is resistant to algae, porous, and does not alter your hydroponic system's pH.  

The good thing about this option is that it does not cost you much. There is also no need to presoak the cubes. However, one thing that some growers may not like about oasis cubes is that they are not sustainable or organic.  

Buy the best hydroponics grow medium at Groindoor.com 

If you need help with choosing the right hydroponic grow medium, the experts at Groindoor.com can help you. Reach out to our experts at 866-GRO-INDR or read our guide on the complete range of hydroponic media in our learning center 

 

 

 

 

 

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  • Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) - Hydroponics

    Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks)

    Grodan

    MSRP: $168.49
    $166.72
    Gro Block Improved Large 4"GR10 w/ hole 4"x4"4" StripGrodan ImprovedGro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North...
    MSRP: $168.49
    $166.72
    Qty in Cart: 0
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    MSRP: $168.49
    $166.72
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  • Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip - Hydroponics

    Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip

    Grodan

    MSRP: $306.78
    $296.44
    Gro Block Improved Small 3" GR4 No Hole (3"x3"x2.6") (Strip)Grodan ImprovedGro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout...
    MSRP: $306.78
    $296.44
    Qty in Cart: 0
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    MSRP: $306.78
    $296.44
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  • Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Shrink wrapped/Strip Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Shrink wrapped/Strip - Hydroponics

    Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Shrink wrapped/Strip

    Grodan

    MSRP: $306.78
    $296.41
    Gro Block Improved Small 3"GR4 w/ hole 3"x3"x2.6" Shrink/StripGrodan ImprovedGro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top...
    MSRP: $306.78
    $296.41
    Qty in Cart: 0
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    Price:
    MSRP: $306.78
    $296.41
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  • Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip, (case of 144 blocks) Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip, (case of 144 blocks) - Hydroponics

    Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip, (case of 144 blocks)

    Grodan

    $255.30
    Gro Block Improved Large 4"GR10 w/ hole 4"x4"4" Shrink/StripGrodan ImprovedGro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers...
    $255.30
    Qty in Cart: 0
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    Price:
    $255.30
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  • Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Shrink wrapped/Strip Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Shrink wrapped/Strip - Hydroponics

    Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Shrink wrapped/Strip

    Grodan

    MSRP: $238.81
    $234.30
    Gro Block Improved Small 4"GR6,5 w/ hole 4"x4"2.6" Shrink/StripGrodan ImprovedGro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top...
    MSRP: $238.81
    $234.30
    Qty in Cart: 0
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    MSRP: $238.81
    $234.30
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  • Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Strip Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Strip - Hydroponics

    Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Strip

    Grodan

    MSRP: $163.26
    $161.54
    Gro Block Improved Small 4"GR6,5 w/ hole 4"x4"2.6" StripGrodan ImprovedGro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North...
    MSRP: $163.26
    $161.54
    Qty in Cart: 0
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    MSRP: $163.26
    $161.54
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  • Grodan Pargro QD Jumbo Block with Hole, 6" x 6" x 4" Grodan Pargro QD Jumbo Block with Hole, 6" x 6" x 4" - Hydroponics

    Grodan Pargro QD Jumbo Block with Hole, 6" x 6" x 4"

    Grodan

    MSRP: $183.85
    $150.48
    Grodan Product Documents Grodan Pargro Safety Data Sheet Pargro Quick Drain Stonewool Grodan Pargro line has been modified to be the driest value-priced Rockwool on the market. Pargro is the leader among affordable horticultural Rockwool. There are...
    MSRP: $183.85
    $150.48
    Qty in Cart: 0
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    MSRP: $183.85
    $150.48
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  • Grodan Expert Slab 15/75, 40" x 6" x 3", case of 12

    Grodan Expert Slab 15/75, 40" x 6" x 3", case of 12

    Grodan

    MSRP: $118.28
    $97.22
    Expert Slab 15/75, 40x6x3, case of 12Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool,...
    MSRP: $118.28
    $97.22
    Qty in Cart: 0
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    MSRP: $118.28
    $97.22
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  • Pargro Quick Drain Slab, 6" x 36", case of 12

    Pargro Quick Drain Slab, 6" x 36", case of 12

    Pargro

    MSRP: $96.83
    $81.28
    Pargro Quick Drain 6"x36" Slab, case of 12Pargro is the leader among affordable horticultural rockwool. Made right in the Grodan factory, so you can be assured of a high quality product at a great price. Drainage Driest value-priced rockwool on the...
    MSRP: $96.83
    $81.28
    Qty in Cart: 0
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    MSRP: $96.83
    $81.28
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  • RIOCOCO PCM Open Top Bag, 3 gal, case of 9 RIOCOCO PCM Open Top Bag, 3 gal, case of 9 - Hydroponics

    RIOCOCO PCM Open Top Bag, 3 gal, case of 9

    RIOCOCO PCM

    MSRP: $51.99
    $48.74
    RIOCOCO PCM 3 Gallon Open Top Bag (9/cs)RICOCO PCM Open Top Bags RIOCOCO PCM OTBs (Open Top Bags) are produced with a special blend of coconut fiber raw materials, which provides the ideal coco medium characteristics to the plants. The selected raw...
    MSRP: $51.99
    $48.74
    Qty in Cart: 0
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    MSRP: $51.99
    $48.74
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  • RIOCOCO PCM Open Top Bag, 2 gal, case of 18 RIOCOCO PCM Open Top Bag, 2 gal, case of 18 - Hydroponics

    RIOCOCO PCM Open Top Bag, 2 gal, case of 18

    RIOCOCO PCM

    MSRP: $75.99
    $71.24
    RIOCOCO PCM 2 Gallon Open Top Bag (18/cs)RICOCO PCM Open Top Bags RIOCOCO PCM OTBs (Open Top Bags) are produced with a special blend of coconut fiber raw materials, which provides the ideal coco medium characteristics to the plants. The selected raw...
    MSRP: $75.99
    $71.24
    Qty in Cart: 0
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    MSRP: $75.99
    $71.24
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  • Roots Organics CocoPalms Tote, 2 cu yd Roots Organics CocoPalms Tote, 2 cu yd - Hydroponics

    Roots Organics CocoPalms Tote, 2 cu yd

    Roots Organics

    $979.29
    Roots Organics Coco Palms 2 cu yd ToteRoots Organics cocopalms is the result of years of research into what makes the best coco growing medias. Roots Organics cocopalms has a near perfect natural pH level (5.2 - 6.3) for optimum nutrient uptake and has...
    $979.29
    Qty in Cart: 0
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    $979.29
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